JEE Main 2019ChemistryCoordination CompoundsHardMCQ

JEE Main 2019 — Coordination Compounds Question with Solution

JEE Main 2019 (12 Apr Shift 1)

Question

Complete removal of both the axial ligands (along the z-axis ) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

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Show full solutionCorrect option: D
Correct answer
D

Step-by-step explanation

When crystal field splitting energy is small, the pairing energy exceeds the splitting energy, and the electrons will fill the d orbitals as if they were degenerate; this is classified as high spin.

We find that the square planar complexes have the greatest crystal field splitting energy compared to all the other complexes. This means that most square planar complexes are low spin, strong field ligands.

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About this question

This is a previous-year question from JEE Main 2019, covering the Coordination Compounds chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.